TY  - RPRT
TI  - New expiratory peak flow meter: preliminary report.
AU  - S A Spitzer
AU  - E Neuman
PY  - 1974
DO  - 10.1378/chest.66.4.440
UR  - https://pubmed.ncbi.nlm.nih.gov/4414813/
ID  - 4414813
ER  -